What is the best alternative to use for car washing when lacking car shampoo?

[MasonFitz]

In the absence of car shampoo, laundry detergent can be used as a substitute. The advantages and precautions of using laundry detergent: Advantages of using laundry detergent: Laundry detergent is a neutral cleaning agent with low corrosiveness, which won't harm the car paint. Some laundry detergents even contain wax components that can leave the car body with a clean and shiny appearance. Additionally, laundry detergent has good degreasing capabilities and can automatically dissolve and remove dirt. Precautions for car washing: Avoid using dishwashing liquid for car washing, as it is primarily designed for kitchen grease, dishes, and dirt on fruits and vegetables. From its design perspective, dishwashing liquid is not suitable for cleaning dirt on car paint surfaces, and long-term use may cause damage to the car paint.